Perl script for moving files between (sub)directories

This script transfers files from one subdirectory to another. When it copies a file from a source subdirectory to a destination subdirectory, it deletes the file on the source subdirectory. It prompts the user for the pathname of the source and destination subdirectories, and it permits the user to enter a Regex expression describing the file types that should be transferred. If you bypass the prompt asking for a Regex expression, it will transfer all types of files.

#!/usr/local/bin/perl

#This Perl script was created by Jules J. Berman, on 9/23/10

#Disclaimer:
#The software is provided "as is", without warranty of any kind,
#express or implied, including but not limited to the warranties
#of merchantability, fitness for a particular purpose and
#noninfringement. in no event shall the authors or copyright
#holders be liable for any claim, damages or other liability,
#whether in an action of contract, tort or otherwise, arising
#from, out of or in connection with the software or the use or
#other dealings in the software.

print "This script transfers files from one subdirectory to another.\n";
print "When it copies a file from a source subdirectory to a destination\n";
print "subdirectory, it deletes the file on the source subdirectory.\n";
print "It prompts the user for the pathname of the source and destination\n";
print "subdirectories, and it permits the user to enter a Regex expression\n";
print "describing the file types that should be transferred.  If you bypass\n";
print "the prompt asking for a Regex expression, it will transfer all\n"; 
print "types of files.\n\n\n";

use File::Copy;
use File::stat;

print "What (sub)directory would you like to copy from?\n";
print "Include the full path of the source (sub)directory.\n";
$from_dir = <STDIN>;
$from_dir =~ s/\n//o;

print "\nWhat (sub)directory would you like to copy to?\n";
print "Include the full path of to the destination (sub)directory.\n";
$to_dir = <STDIN>;
$to_dir =~ s/\n//o;

print "\nWhat regular expression for file types would you like\n";
print "to transfer? Or press enter-key for all files\.\n";
$regex = <STDIN>;
$regex =~ s/\n//o;
if ($regex eq "")
  {
  $regex = "\[a\-z0\-9\]\+";
  }

opendir(FTPDIR, $to_dir) || die ("Unable to open directory");
@to_files = readdir(FTPDIR);
chdir($to_dir);
foreach my $to_filename (@to_files)
  {
  @statarray = stat($to_filename);
  $to_file_time = $statarray[9];
  $filehash{$to_filename} = $to_file_time;
  }
closedir(FTPDIR);

opendir(FTPDIR, $from_dir) || die ("Unable to open directory");
@from_files = readdir(FTPDIR);
closedir(FTPDIR);
chdir($from_dir);
foreach my $from_filename (@from_files)
  {
  next if ($from_filename !~ /$regex/i);
  next unless (-f($from_filename));
  @statarray = stat($from_filename);
  $from_file_time = $statarray[9];
  $to_filename = $to_dir . "\\" . $from_filename;
  if (exists($filehash{$from_filename})) 
    {
    $filehash{$from_filename} = $file_time_in_to_directory;
    if ($file_time_in_to_directory < $from_file_time)
      {
      copy($from_filename, $to_filename)||die"cannot";
      print "File $from_filename was updated\n";
      &delete($from_filename);
      next;
      }
    if ($file_time_in_to_directory >= $from_file_time)
      {
      print("File $from_filename exists or is earlier than existing file\n");
      &delete($from_filename);
      next;
      }
    }
  else
    {
    copy($from_filename, $to_filename)||die"cannot";
    print "File $from_filename was copied\n";
    &delete($from_filename);
    next;
    }
  }
print "\nDone\n";

sub delete()
  {
  my $filename = @_[0];
  $count = unlink($filename);
  if ($count)
    {
    print("File $filename was deleted\n");
    }
  else
    {
    print "Couldn't delete file\n";
    }
  }
exit;